what is the answer to
\(6 + 6 {2}^{2} \)
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Answer: his distance from the pole is 90.16 ft

Explanation:

based on the diagram of the question i will upload along this answer;

45 - d is equal to part of the pole below the horizontal line

d/x = tan(16) ; x = d/tan(16)............equ1

(45-d) / x = tan(12); x = (45-d) / tan(12)-----------equ2

∴ d/tan(16) = (45-d) / tan(12)

d.tan(12) = (45-d).tan(16)  

d.tan12 = (45×tan16) - d.tan16

0.2125d = 12.9034 - 0.2867d

0.2125d + 0.2867d = 12.9034

0.4992d = 12.9034

d = 12.9034/0.4992

d = 25.85 ft

now substitute value of d into any of our previous equation, lets take equation 1

x = 25.85 / tan(16)

x = 25.85 / 0.2867

x = 90.16 ft

Therefore his distance from the pole is 90.16 ft

Answer:

This problem involves the concept of a random walk, which is a mathematical model of a path consisting of a succession of random steps.

The question asks for the distance, R(n), from the center of a star after n steps of a photon, assuming a 2D random walk.

The random walk in two dimensions has a step length of A_i and the direction of the steps is uniformly distributed in [0, 2π). The change in position after each step can be written in Cartesian coordinates (Δx, Δy), where Δx = A_i cos(θ_i) and Δy = A_i sin(θ_i).

The displacement from the center after n steps is given by the vector sum of all the individual steps. This vector sum can be written in terms of its Cartesian coordinates, (X, Y), where X = Σ Δx and Y = Σ Δy. This sum over n random vectors is itself a random variable. The net displacement R(n) from the center of the star after n steps is given by the magnitude of the net displacement vector:

R(n) = √(X² + Y²)

Because each step is independent and has a random direction, the expected value of the cosine and sine for any step is zero. This means that the expected values of X and Y are both zero.

However, the mean square displacement is not zero. Because the steps are independent, the mean square displacement in each direction is additive. For a 2D random walk:

<X²> = Σ <(Δx)²> = n <(A cos θ)²> = n A²/2

<Y²> = Σ <(Δy)²> = n <(A sin θ)²> = n A²/2

Because <X²> = <Y²>, we can write:

<R²> = <X²> + <Y²> = n A²

So, the root mean square distance (the square root of the mean square displacement) after n steps is:

R(n) = √(<R²>) = √(n) * A

Therefore, the distance R(n) that the photon is expected to be from the center of the star after n steps grows as the square root of the number of steps, with each step having a length A. Please note that this result holds for a 2D random walk. A real photon in a star would be performing a 3D random walk, which would have slightly different characteristics.

Answer:

a)   F_total = 6.15 10-5 N

b)    r₁ = 0.3045 m,    r₂ = 0.0051 m

Explanation:

In this exercise we must use that the total force is the sum of the forces on the body, remember that the gravitational force is attractive

      ∑un F = F₁₂ - F₃₂

where F₁₂2 is the force between the body of M1 = 155 kg, placed to the right and the body of m = 69 kg; the force F₃₂ is the force between the body of M3 = 455 kg, located on the left and the body of 69 kg

    these forces are gravitational forces, which is described by the expression

       F = G M m / r²

let's write each force

       F₁₂= G M₁ m / r²

leather m is at the midpoint of large bodies

 F₁₂= 6.67 10⁻¹¹ 155 69 / 0.15²

 F₁₂ = 3.17 10⁻⁵ N

 F₃₂ = 6.67 10⁻¹¹ 455 69 / 0.15 2

  F₃₂= 9.31 10⁻⁵ N

the net force is

      F_total = (3,17 - 9,31) 10-5

      F_total = 6.15 10-5 N

This force is directed to the left

b) in this case it asks us to know where we place the body so that the force is zero

            F12 = F32

the object is at a distance r from the mass1 and at a distance (0.3 - r), we avoid the equation

              F12 = G M1 m / r²

              F32 = G M3 m / (0,3-R) 2

             G M1 m / r2 = G M3 m / (0,3-r) 2

              M1 / r2 = M2 / (0,3-r) 2

              (0,3 -r) 2 M1 / ​​M2 = r2

               0.32 - 2 r 0.3 + r2) = M2 / M1r2

                (0.09 - 0.6 r + r2) = 455/155 r2 = 2,935 r2

                -0.09 + 0.6r + 1.935 r2 = 0

we simplify the expression

               r2 +0.31 r - 0.0465 = 0

let's solve the quadratic equation

               r = [0.31 + - RA (0.31 2 -4 0.0465)] / 2

               r = [0.31 + - RA (0.0899] / 2

               r = [0.31 + - 0.2998] / 2

               r₁ = 0.3045 m

               r₂ = 0.0051 m

As thermal energy is added to a sample of water, the potential energy of its molecules increases, and then the kinetic energy of its molecules increases.

The sections of the heating curve illustrate this process  is B followed by D

Therefore option A is correct.

Thermal energy (also called heat energy) is described as being produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.

some factors of thermal energy include:

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Answer:

1. The induced current will increase.

2. The ammeter will detect an increase in current, and the compass will detect a stronger magnetic field.

3. the ratio of incoming and outgoing voltages

4. Voltage and electric current are induced.

100%

The induced current will increase.

                                                           or

        \(${\displaystyle {\mathcal {E}}=-{\frac {\mathrm {d} \Phi _{B}}{\mathrm {d} t}}}\)

        \($\nabla \times \mathbf {E} =-{\frac {\partial \mathbf {B} }{\partial t}}\)

        or

        \(${\displaystyle \oint _{\partial \Sigma }\mathbf {E} \cdot \mathrm {d} \mathbf {l} =-\int _{\Sigma }{\frac {\partial \mathbf {B} }{\partial t}}\cdot \mathrm {d} \mathbf {A} }\)

Given is that a current is induced by moving a magnet in and out of a coil of wire.

As the magnet moves twice as fast, then the rate of change of magnetic flux will increase and hence the induced current will increase.

Therefore, we can conclude that the induced current will increase.

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The point where m3 experiences a zero net gravitational force due to M1 and m2 is 57.42 m.

m1<------(x)------> m3 <-----------(94.8 m - x)-------->m2

a point, x, where m3 experiences a zero net gravitational force due to M1 and m2;

Force on m3 due to m1 = Force on m3 due to m2

Gm1m3/d² = Gm2m3/r²

m1/d² = m2/r²

where;

m1/(x²) = m2/(94.8 - x)²

m1(94.8 - x)² = m2x²

(94.8 - x)² = (m2/m1)x²

(94.8 - x)² = (10.6/25)x²

(94.8 - x)² = 0.424x²

(94.8 - x)² = (0.651)²x²

94.8 - x = 0.651x

94.8 = 1.651x

x = 94.8/1.651

x = 57.42 m

Thus, the point where m3 experiences a zero net gravitational force due to M1 and m2 is 57.42 m.

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Answer:

True

Explanation:

Answer:

natural convection

............

Answer:

a)40 meters

b)2 m/s

c)2 m/s

d)0 m/s

e)45 degrees northeast

Explanation:

a) The displacement from C to A is the distance directly across the river, which is 40 meters.

b) The speed of the boat as seen by people standing at A is the magnitude of the boat's velocity vector, which is equal to the displacement divided by the time taken:

Speed = displacement / time = 40 m / 20 s = 2 m/s.

c) Let v be the speed of the water in the river. The boat is moving at right angles to the flow of the river, so the water exerts a perpendicular force on the boat. The time taken for the boat to travel from A to C is 20 seconds, during which time the boat will have been carried downstream by the river by a distance equal to v times the time taken.

Distance carried downstream = v × time = v × 20 m.

Since the boat landed at C, which is directly across the river from A, the distance it traveled horizontally is 40 meters. Therefore:

40 m = (boat speed) × (time taken) = (boat speed) × 20 s.

Hence, the speed of the boat is:

Boat speed = 40 m / 20 s = 2 m/s.

So, we have two equations:

Distance carried downstream = v × 20 m

Boat speed = 2 m/s

From the first equation, we get:

v × 20 m = 40 m

Therefore, the speed of the water in the river is:

v = 40 m / 20 m = 2 m/s.

d) The speed of the boat as seen by a fish drifting with the river is the difference between the speed of the boat and the speed of the water in the river:

Boat speed - Water speed = 2 m/s - 2 m/s = 0 m/s.

So, the speed of the boat as seen by a fish drifting with the river is zero.

e) The boat should head in a direction that makes its velocity vector point directly from A to B. Since A and B are directly opposite each other, this means the velocity vector should be perpendicular to the line connecting A and B.

We know the boat's velocity vector has a magnitude of 2 m/s and is at right angles to the velocity vector of the water in the river, which has a magnitude of 2 m/s. So, we can draw a vector diagram with the velocity vector of the boat pointing straight up and the velocity vector of the water pointing straight to the right. The vector connecting the tail of the water velocity vector to the head of the boat velocity vector will then point directly from A to B.

The angle between the boat's velocity vector and the line connecting A and B can be found using trigonometry. Let θ be this angle. Then:

tan(θ) = (boat speed) / (water speed) = 2 m/s / 2 m/s = 1.

Taking the inverse tangent of both sides gives:

θ = tan^(-1)(1) = 45°.

So, the boat should head in a direction 45 degrees to the right of straight up, or northeast.

What is true about the number of doctors is D. It is not an accurate measure of the quality of health care in the United States.

The number of doctors per 10,000 people simply tells us the phyiscian proportion in the united states.

But does it suggest that the quality of healthcare in America is way better than many other places? No.

There are Many other factors, Like as access to healthcare facilities, healthcare infrastructure, affordability, and the overall health of the population, contribute to the quality of healthcare in a country.

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The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

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Explanation:

\(miles \: to \: km \\ = 1.2 \: miles \times \frac{1 \: km}{1.6093 \: miles} \\ = 0.7457 \\ \\ km \: to \: feet \\ = 1.8 \: km \times \frac{3280 \: ft}{1 \: km} \\ = 5904 \: ft\)

False. James' statement is not precise enough, but there are a few key points he should specify to make it more accurate:

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For signs of such collisions on the moons of the outer planets, look for craters, ray systems, fissures and fractures, melted or evaporated material, and changes in the moon's surface composition.

Huge fragments of the newly discovered comet Shoemaker-Levy 9 (SL9) collided with Jupiter over a period of days from July 16 to 22, 1994, leaving vast, dark scars in the planet's atmosphere and lofting superheated plumes into its stratosphere.

Dust was also left floating on top of Jupiter's clouds after the collision. The movement of the planet's dust allowed researchers to trace Jupiter's high-altitude winds for the first time.

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When describing motion, speed indicates the pace at which an object is travelling. It has one scalar component identifying its magnitude, irrespective of direction.

The unit for measuring speed can be either meters per second (m/s) or miles per hour (mph). For velocity, it's a different story. Its definition encompasses both speed and direction since it's a vector quantity. Measureable just like speed using m/s or mph.

In plain physic terms, acceleration reveals how much speed changes over time; hence it is also a vector quantity with not only size but also direction. Depending on whether a physical item is increasing in momentum, slowing down or static, the value could be positive, negative, or zero. Acceleration is calculated using units metres per second squared (m/s2).

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Answer:

Ro=19.350 & R¹⁰⁰=26.703

Explanation:

The relative density of aluminum is 2.7. This means that aluminum is 2.7 times denser than water, which is the reference substance often used for comparing densities

The relative density (also known as specific gravity) of a material is the ratio of its density to the density of a reference substance. In this case, we are given the density of aluminum as 2.7 x 10^3 kg/m^3.

To find the relative density, we need to compare it to the density of the reference substance. The most commonly used reference substance for relative density is water, which has a density of 1000 kg/m^3.

Relative density = Density of the material / Density of the reference substance.Relative density = (2.7 x 10^3 kg/m^3) / (1000 kg/m^3)

Relative density = 2.7

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Based on the given food chain, the energy flows from the producer (grass) to the primary consumer (rabbits), to the secondary consumer (foxes), and finally to the tertiary consumer (hawks), which is the apex predator.

Each level of the food chain typically follows the 10% rule, where only about 10% of the energy from the previous level is transferred to the next level. Therefore, to calculate the energy received by the apex predator, we need to multiply the energy produced by the grass by the product of the energy transfer efficiency across all levels in the food chain:

83,721 x 0.1 x 0.1 x 0.1 = 837.21 kcal/m²/yr

Therefore, the apex predator (hawks) will receive approximately 837.21 kcal/m²/yr of energy.

1. People have to prepare for natural disasters in order to reduce the risk of injury, death, and property damage caused by the disaster.

Natural disasters are adverse events that occur naturally and are a result of the interaction between the physical environment and human activities. They can include floods, hurricanes, tornadoes, earthquakes, tsunamis, wildfires, landslides, volcanic eruptions, and extreme weather events. Natural disasters can have devastating impacts on communities, including loss of life, damage to property, displacement, and destruction of livelihoods. Governments, organizations, and individuals are increasingly working to reduce the impacts of natural disasters through improved risk management, infrastructure planning, and disaster response and recovery efforts.

2. People have to prepare for natural disasters in order to be able to respond quickly and efficiently in the event of an emergency.

3. People have to prepare for natural disasters in order to plan for the financial impacts of the disaster.

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Answer:

The solar potential in Nepal is 50,000 terawatt-hours per year, which is 100 times larger than Nepal's hydro resource and 7,000 times larger than Nepal's current electricity consumption. Solar can easily meet all future energy needs in Nepal. Solar energy is cheaper than fossil fuels, nuclear and hydro.

The electric charge and the electric force  on each sphere in terms of q is 2

Two metallic spheres, a and b, with a charge of half and a force of two tens of five

F1=k(1/2)(1/2)/r2

Equation F1=k/4r

A and C are two metallic spheres, respectively, so

Equation F2=k/2rsquare

equ1/equ2

2×10^-5/F2=k/4r^2×2r^2/k

F2=4×10^-5

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The impulse needed to stop the 32g mass traveling at a velocity of 38 m/s is -1.216 kg·m/s.

To find the impulse required to stop a mass, we can use the impulse-momentum principle, which states that the change in momentum of an object is equal to the impulse applied to it. The equation for impulse is given by:

Impulse = Change in momentum

The momentum of an object is defined as the product of its mass and velocity:

Momentum = mass × velocity

Given:

Mass (m) = 32g = 0.032 kg (since 1 g = 0.001 kg)

Velocity (v) = 38 m/s

To find the momentum of the mass before stopping, we can multiply the mass and velocity:

Initial momentum = mass × velocity

Initial momentum = 0.032 kg × 38 m/s

Now, since the mass comes to a stop, the final velocity (vf) is 0 m/s. Therefore, the final momentum is zero.

According to the impulse-momentum principle, the change in momentum is equal to the impulse applied. Thus, the impulse required to stop the mass can be calculated as:

Impulse = Final momentum - Initial momentum

Impulse = 0 - (0.032 kg × 38 m/s)

Impulse = -1.216 kg·m/s

The negative sign indicates that the impulse is in the opposite direction to the initial momentum.

Therefore, the impulse needed to stop the 32g mass traveling at a velocity of 38 m/s is -1.216 kg·m/s.

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The name of the ionic compound NaS is sodium sulfide.

Ionic compounds are defined as substances bound together by ionic bonding. In order to reach their closest arrangement as a noble gas, elements can either gain or lose electrons. For the completion of the octet, ions are formed (either by adding or losing electrons), which aids in their stabilisation.

Metals typically lose electrons to complete their octet in a reaction with non-metals, whereas non-metals typically acquire electrons to complete their octet. Ionic compounds are typically created when metals and non-metals react.

When sodium (Na) metal reacts with sulfur (S) non-metal, an ionic compound forms named sodium sulfide with chemical formula NaS.

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Each of the five friends needs to pay £12 to cover the cost of their own meals and contribute towards the birthday person's meal. Using mean allows us to distribute the cost equally among the friends, ensuring a fair division of expenses for the meal.

To determine how much each of the five friends needs to pay, we can use the concept of averages (mean) and divide the total cost by the number of people paying.

In this scenario, the total cost of the meal for 6 people is £12 per person. Since the other 5 friends have decided to pay for the birthday person's meal, they will collectively cover the cost of their own meals plus the birthday person's meal.

To calculate the total cost covered by the five friends, we can subtract the cost of one person's meal (since the birthday person's meal is being paid by the group) from the total cost. The cost of one person's meal is £12.

Total cost covered by the five friends = Total cost - Cost of one person's meal

= (£12 x 6) - £12

= £72 - £12

= £60

Now, to find out how much each of the five friends needs to pay, we divide the total cost covered by the five friends (£60) by the number of friends (5).

Amount each friend needs to pay = Total cost covered by the five friends / Number of friends

= £60 / 5

= £12

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Answer:

Initial energy = (M/2)*Vo^2 = 12.80 J

Total energy at 4.7 m and V = 5 m/s:

= (M/2)*5^2 + M*g*4.7 = 1.25 + 4.61 J

Fraction of ball's energy LOST = (12.80-5.86)/12.80

= 0.542

Explanation:

I know it's not the real answer, but this will help you find the real one

Hope this helps!!!

Answer:

0.5

Explanation:

I think it is this beacause if u have the answer you have that

Answer:

The industrial revolution, which began in the late 18th century, brought about many technological advancements that changed the way goods were produced, including the invention of the steam engine. The steam engine made it possible to automate many processes and increased the efficiency of manufacturing. In the brewing industry, the steam engine was used to power pumps and other machinery, making it possible to brew beer on a larger scale and with greater consistency. Additionally, the steam engine made it possible to transport beer over long distances, which helped to expand the market for beer beyond local communities. As a result, the industrial revolution had a significant impact on the brewing industry, making it possible for breweries to produce more beer at a lower cost and to reach a wider market.

Answer:

V = a t      velocity after time t

t = 33.1 / 9.80 = 3.38 sec   (time ball had been falling)

S = 1/2 a t^2 = 55.9 m

So the ball had been falling  for 7 * 8 = 56 m  

The child was 7 floors from the top

Since he was on the eight floor the floors below him were

7 * 8 + 12 = 68 m     total floors below child

68 + 56 = 124 m      total height of building

Total floors in building = 7 + 7 + 1 = 15 floors

PE at top = KE at bottom

KE = m g h = .125 * 9.80 * 124 = 152 Joules

The pendulum would be a system. The statements describes a closed system is "It experiences only forces originating from within". The most common use of closed systems is to simplify system analysis

A closed system is one that does not exchange matter with its surroundings and does not experience any outside forces. An open system, on the other hand, can exchange matter with its surroundings and does experience outside forces

Therefore, the correct options are

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